基于T形截面的六片短肢剪力墙,两片普通剪力墙在低周反复水平荷载作用下的试验,描述了短肢剪力墙的破坏现象。通过对滞回曲线及骨架曲线的分析,找出短肢剪力墙试件从开始开裂直至破坏过程中刚度退化系数随试件位移变化的规律,并利用最小二乘法模拟了此曲线,给出了模拟公式。确定了试件的位移延性,比较了各试件间的差异。此外,通过与两片普通剪力墙试验结果的对比,发现当短肢剪力墙的高厚比从规范规定的8变化到普通剪力墙的9时性能差异并不明显。
Based on the cyclic load tests on six short shear walls and two pieces of wall in the general level, the destruction of the short shear wall was described. In the analysis of hysteresis curves and skeleton curves, we found the process of the degradation of stiffness for the short shear wall specimens from the beginning of crack to failure fol- lowing the changing of displacement and derived a formula to simulate the degradation of stiffness by using the least squares methed, we determined and compared the ductility of the samples. In addition, on the basis of the test result contrast of two common walls, we found that when the depth-thickness ratios of the short shear walls change from 8 to 9, the differences of their performance are not large.